【摘要】 研究了微波提取溪黄草Rabdosiaserra(Maxim )Hara黄色素的新工艺并确定了最佳工艺条件:原料为2 .0000g溪黄草干粉,提取剂为95%乙醇,提取剂用量为1∶60(g∶ml),微波功率为464W,提取时间为350s,提取次数为3次。最佳工艺条件下色素的提取率为90. 6%,产率为12. 7%,色价E(1%, 330nm)为53. 3,产品pH值为6 .0。与溶剂浸提法相比,微波法提取溪黄草色素的每次提取时间由6h减小为350s,提取率从90. 4%增加到90. 6%。更多还原

【Abstract】 A new method of microwave extraction was used to extract the yellow pigment from Rabdosia serra (Maxim.) Hara. The extraction processes were investigated and the optimal conditions were determined as follows: raw material is 2.0000 g dry powder, the extraction agent is 95% alcohol, the ratio of raw material to extraction agent is 1∶60(g∶ml), microwave power is 464 W, extraction time is 350 s, extraction times is 3.Under the optimal conditions, extraction rate is 90.6%, productive rate is 12.7%, colority E(1%,330 nm)is 53.3 and pH value of the extractive is 6.0. Compared with solvent extraction, microwave extraction reduces extraction time from 6 h to 350 s and increases extraction rate from 90.4% to 90.6%.更多还原